Well pump gear box hydrodynamic washer

A planet assembly comprising:

• a planet carrier;
• a pin attached to said planet carrier;
• a planet gear mounted on said pin such that said planet gear rotates about said pin;
• and
• a washer between an end of said planet gear and said carrier, said washer comprising an inner diameter and an outer diameter, a first side and a second side, said second side having a mating profile, said first side having a pumping land extending from said inner diameter outward radially to a pressure pocket, said pressure pocket being recessed relative to said pumping land and extending outward radially to a containment edge, said containment edge being raised relative to said pressure pocket and said pumping land and adjacent to a bearing surface, said bearing surface extending radially outward from said containment edge to said outer diameter.

A hydrodynamic spacer for use in a planet assembly in a fluid saturated environment of a gear reducer for a progressive cavity pump in an electronic submersible pump assembly comprising:

• an outer diameter;
• an inner diameter less than said outer diameter, said diameters concentric about an axis of rotation;
• a mating profile extending from said outer diameter to said inner diameter along one side of said spacer;
• a bearing surface opposite said mating surface extending from said outer diameter towards said inner diameter;
• a pressure pocket extending from said bearing surface towards said inner diameter, said bearing surface and pressure pocket separated by a containment edge, said pressure pocket extending axially towards said mating surface relative to said bearing surface;
• and
• a pumping land extending from said pressure pocket to said inner diameter, said pressure pocket and said pumping land being separated by a sharp edge, said pumping land extending axially away from said mating profile relative to said pressure pocket, and axially towards said mating profile relative to said bearing surface.